Natural Frequency

Q.

When a body vibrates under a periodic force, the vibrations of the body are called natural vibrations.

1. False

2. True

Q.

The displacement time graph for the vibration of a particle is given below:



The type of vibration of the particle is natural vibration.

1. True
   

2. False
   

Q.

Choose the correct statements about forced vibration:

1. There is a presence of external periodic force.
2. The frequency of vibration is equal to the frequency of the applied force.
3. The amplitude of vibration does not depend on the frequency of the applied force.
4. The frequency of vibration changes with a change in frequency of the applied force.

Q.

Draw a graph between displacement and time for a body executing free vibrations

Q.

Give one example of forced vibration.

Q.

Differentiate between resonance and forced vibrations.

Q.

A wire stretched between two fixed supports, is plucked exactly in the middle and then released. It executes ___. (neglect the resistance of the medium)

1. Dampened vibrations

2. Resonant vibrations
   

3. Natural vibrations
   

4. Forced vibrations